Abstract

The purpose of the study was to systematically design two multipinhole (MPH) collimators for a MR compatible seamless small animal SPECT detector ring (DR) that, for a given system resolution (SR), maximized detector area usage and achieved highest possible geometric efficiency (GE) within the system's design constraints. The SPECT DR consists of 5 rings of 19 2.56×2.56cm2 individual CZT detectors connected seamlessly with a total area of 62,259mm2. A set of multipinhole apertures was arranged on a cylindrical collimator sleeve (CS) and had a common-volume-of-view (CVOV) of 50mm diameter. From theoretical calculations, we determined 3 rows of 7, 8, 9, and 10 pinholes would provide the target SR and achieve GE that are among the highest possible while maximizing detector usage and maintaining at most 20% overlap between the pinhole projections. The projections of the pinholes onto the …

Metadata

publication

2011 IEEE Nuclear Science Symposium Conference Record, 3402-3405, 2011

year

2011

publication date

2011/10/23

authors

Andrew J Rittenbach, Jingyan Xu, James Hugg, Benjamin MW Tsui

link

https://ieeexplore.ieee.org/abstract/document/6152618/

conference

2011 IEEE Nuclear Science Symposium Conference Record

pages

3402-3405

publisher

IEEE